Some months ago I built a DIY tripod adaptor for my 10x50 binoculars, and using this I was able to see Jupiter as a disc, and several of its moons, for the first time. (In fact it was this that made me want to buy a telescope).

Since then I have several times been able to see the moons with unsupported binoculars, which I could never do before. I thought at first I was imagining it, but the positions of my moons always corresponded with the actual ones when I checked afterwards.

Further evidence that astronomy is about 'learning to see.'